Why did you insist that HE do it? He said take her to someone more skilled in crowded teeth. When my family dentist says that, then the kids see a specialist! Also, if a doctor hurt my kids, "being used to him" is not a reason to give him another chance. Your kids will get used to the next one IF he's good at his job. Because he hurt a child once and you took them back, you may not have a case. It may even reflect badly on you.
He said she needed an orthodontist: that means braces MIGHT have been able to space her teeth out and then the teeth could have come out naturally. In our day kids didn't get braces until about 15 because they thought the jaw needed to be close to adult size to start straightening the teeth. They now can start braces at about 8 years old and it helps with the baby teeth spacing, too. Next time a doctor says "see a specialist" ~ ask why!
As far as numbing shots, when my daughter had teeth pulled, they gave her the medicine, waited about 5 or ten minutes, checked her to see if she was numb, waited a few more minutes for it to be TOTALLY numb and THEN pulled her teeth. My dentist does the same.
My familt dentist is NOT a pediatric dentist. He WILL do cleanings, fillings and everyday stuff. His tools for extraction are BIGGER than pediatric tools. My daughter needed several baby teeth pulled and also a baby tooth that never surfaced needed to be cut out from under the gum. My dentist said he wasn't comfortable or knowledgable enough with kids' mouths and that she needed a children's oral surgeon because the nerve placement is different and also that he wasn't up-to-date on the dosage amounts of pain killer for kids. Our Doc had no connection with the oral surgeon I chose, so it had nothing to do with "wanting more money out of us".
Sorry your daughter had such a bad experience.